1st order low pass filter

The 1^st order low pass filter attenuates all frequencies above the specified limit frequency. Select a servo drive (1) in the TwinCAT System Manager, start the TCDriveManager (2), click on the respective axis (3) and select the "Current command value filter" (4).

A maximum of four filters are evaluated, which can be parameterised independently of one another. In area (6), activate the filter that you would like to occupy with the low pass filter. The cycle time of the velocity controller is indicated in field (7). The "QMath Factor" (8) determines the scaling of the filter input parameter. With the current filter implementation the maximum possible resolution is achieved with the default value "30".

Now select "Low pass filter 1. order" (29) from the drop down menu.